Exchangeable heel



Nov. l, 1932. E. GRAUERT 1,885,341

EXCHANGEABLE HEEL Filed March 25. 1931 Patented Nov. 1, 1932 UNiTED STATES ERICH GRAUERT, or HALiaEasrnDreEaMANy" EXGHANGEABLE naar."

Application filed March 25, 1931, Serial No.'525,\1176, andA nQGermany. March 26,1930.v

This invention relates to an exchangeable.

a plate fixed on the shoe, a knob securedV to a spring engaging in a depression in a plate, fixed on the heel, so that the heel is securely held on the shoe. If it is desired to remove the heel from the shoe, it is sufficient to exert a strong jerk or pull on the shoe so that the knob disengages from the heel plate and the heel drops ofi Vfrom the Shoe. l Y n A heel according to the invention is illustrated by way of example inthe accompanying drawing in which:

Fig. 1 is a longitudinal section through the heel portion of the shoe.

Fig. 2 is a bottom plan view of the plate fixed on the shoe.

Fig. 3 is a top plan view of the plate fixed on the heel. p v

Fig. 4 is a longitudinal section on line 4-4 of Fig. 2.

Fig. 5 is a longitudinal section on line 5 5 of Fig. 3. Y

Fig. 6 isa cross section on line 6-6 of Fig. 2.

Fig. 7 Fig. 3.

A metal plate a corresponding to the shape of the heel is fixed on the heel portion of the shoe and provided with three parallel dove-tailed grooves b and c, the grooves being arranged on the outer edge of the plate a, whereas the groove c is in the middle of the plate towards its rear end. The groove c extends into an elongated wide recess (l, reaching almost to the front edge of the plate. A blade spring e is accommodated in this recess and carries on its free end a round knob f.

A metal plate 7L corresponding to the shape of the heel is fixed on the heel g (Fig. l) and has dove-tailed projections b and c', oorresponding lto the grooves b and c. A round depression f is also formed in the plate z.

is a cross section on line 7-7 of its front face one near each corner and a Vpoint corresponding-.tothe position; of

theknobA f of' the spring e'. .i j

In orderto slipthejheel on the platea, j

'the plate/iisconnected/to the plate a so that the projection c engages in the recess al behind the spring e, after which the three projections b and c can easily be slipped into the grooves and c. The distance which the heel is shifted, therefore only corresponds to the length of the projections b, c so that theheel can easily be slipped onto the plate a a from the shank side, even under difiicult circumstances. VThe knob f'engaging in the depression f holds the heel rigidly on the shoe so that itis impossible for the heel to automatically `become detached from the shoe. -f In order to effect the removal, a'suitably strong pull in the direction of the arrow shown in Fig. l is necessary, which pull must be sufficiently strong to pull lthe knob out of the depression f so that the heel is de-k tached from the shoe.

In this connection it is thought of accidents which often occur owing to a railwayoiicial or some other person getting his foot jammed je between points so that he is run over by a train, because he is unable to Vremove his foot in time as the heel is jammed in the points. If the heel according to the invention is employed, such accidents cannot occur, as, if the person, whose heel is jammed in thel points, exerts a strong pull on'the heel, he

frees the shoe.

The heel according to the inventiony possesses the further advantage that it is not apparent that the heel is removas able, as the `holding device does not project from the heel. The heel is also suitable for ladies shoes.

I claim:

' A detachable heel comprising in combina-,p0

tion with a heel stump on the shoe,.a metal plate corresponding to the shape of and fixed on said heel stump having in its lower side two short dove-tailed grooves extending from short dove-tailed groove in the middle near.

its rear end, a recess extending romsaid middle groove to near the front :tace of the plate, a spring in the recess fixedat itsfront end to said plate, a downwardly projectingiflo A to hemispherical knob near the free end of said spring, a detachable second metal plate also corresponding to the shape of the heel stump having a hemispherical depression in its middie, and short dove-tailed projections on the upper side of said detachable plate registering with'` and corresponding shape to the dove-tail`ed grooves in said 'xed plate adapted to slide in said grooves to connect sa-id de-f tachable plate to said ied plateysaidknob adapted to engage in they depression inA said' detachable plate to lock said detachable plate on said fixed plate but to be disengaged from said depression upon sudden'. pressure being.

exerted4 on therear end of lthe heel to allow szii'd dtachable plate to'loe slipped 'ff said fXed. plate .Y f e In' testimony Wlere'f'l ailk myY sig'atore. 'ERICH' GRAERT; 

